A filter structure for casting

Abstract

The present invention discloses a filtering structure for casting, which is mainly composed of a filter and a edging structure. The edging structure includes a plurality of edging plates and refractory cotton. According to the shape and size of the filter, a suitable number of edging plates are selected to form a shape that fits the filter and are surrounded around the filter. Then, refractory cotton is wrapped around all the edging plates to completely fill the fitting gap between the filter and the sand mold, blocking the molten iron so that it must pass through the filter aperture to enter the mold cavity, reducing the risk of product failure due to slag holes; each edging plate includes an inner plate, an outer plate and a guide cavity between the inner plate and the outer plate. The inner plate and the outer plate are connected by a connecting piece. The spacing between the inner plate and the outer plate can be adjusted according to needs, and it can be easily lowered into the sand mold. Then, through the function of the guide cavity and the internal guide plate, part of the liquid can be diverted into the guide cavity for flow, and the guide plate is used to distribute the liquid into the filter for filtration, which plays a good drainage and dredging role.

Description

Technical Field

[0001] The invention relates to the technical field of casting, in particular to a filtering structure for casting. Background Art

[0002] In the design of casting pouring systems and the actual production process, filters are often used to filter out slag and rectify the molten iron. Generally, the filters are mostly placed on the cross runner. When the molten iron passes through the filter aperture, the inclusions in the molten iron are adsorbed on the filter grid, thereby purifying the molten iron. However, in the prior art, the filter is hard and has large dimensional deviations. During design, the method of increasing the fitting gap is usually adopted to adapt to the filter size, resulting in a large gap between the filter and the sand mold, and the filtering effect is deteriorated. There are mesh protrusions on the side grid of the filter, which will break when subjected to external force after being lowered into the sand mold and be flushed into the mold cavity by the molten iron. In addition, because its dimensional deviation is difficult to control, the filter often becomes tight and loose during actual application, increasing the management difficulty and process risk during the actual production process. Therefore, there is an urgent need for a casting filter structure to solve the above problems. Summary of the Invention

[0003] The present invention aims to provide a filtering structure for casting, which can effectively solve the problems existing in the above-mentioned prior art.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: a casting filter structure mainly composed of a filter and a edging structure, wherein the edging structure includes:

[0005] A plurality of edging plates, each of the edging plates surrounding and wrapping around the filter; and

[0006] Each of the edging plates includes an inner plate, an outer plate, and a guide cavity between the inner plate and the outer plate. A connector and a plurality of guide plates staggered in the three-dimensional space of the guide cavity are installed in the guide cavity. The connector connects the inner plate and the outer plate and is used to adjust the spacing between the inner plate and the outer plate. All of the guide plates cooperate to guide the liquid entering the guide cavity to tend to gather toward one side of the inner plate. Channels are provided on the inner plate corresponding to each of the guide plates, and the channels are configured to guide the gathered liquid into the filter.

[0007] Refractory wool is wrapped around all the edging plates and is used to fill the gap between the edging plates and the sand mold.

[0008] Preferably, the edging plates are spliced in sequence to form a shape that fits the filter.

[0009] Preferably, a plurality of barbs are arranged on the side of the inner plate of each edging plate facing the filter, and the barbs are configured to fit on the filter along with the inner plate. The barbs are inserted into the filter to lock the inner plate in a stable fitting state.

[0010] Preferably, the connecting member is mainly composed of two connecting plates to form a hinge-like structure, and the two connecting plates are movably connected to the outer plate and the inner plate at their ends away from each other, and the distance between the inner plate and the outer plate is adjusted by changing the angle between the two connecting plates.

[0011] Preferably, each of the connecting plates is provided with a plurality of through holes, and a surface of each connecting plate that receives liquid is provided with a slope toward the center of the guide cavity.

[0012] Preferably, each of the guide plates comprises:

[0013] A first guide plate is mounted on the outer plate and tilted toward the inner plate;

[0014] a second guide plate, mounted on the inner plate and located below the first guide plate, receiving the liquid flowing down from the first guide plate and tilted toward the inner plate to gather the liquid toward the inner plate; and

[0015] A flow-stopping strip is installed at one end of the second flow guide plate away from the inner plate, and the flow-stopping strip seals at least a portion of the space between the second flow guide plate and the first flow guide plate.

[0016] Preferably, the coverage area of the first guide plate and the second guide plate is not less than the maximum distance between the inner plate and the outer plate.

[0017] Preferably, the first guide plate is provided with a slope on one side for receiving the liquid, wherein the slope is inclined toward the center of the guide cavity.

[0018] Preferably, at least the first guide plate is provided with a recessed flow channel, and the first guide plate is provided with a slope on one or both sides of the flow channel, and the slope is inclined toward the center of the guide cavity, wherein the flow channel is used to carry the liquid to flow toward the inner plate, and the overloaded liquid flows out of the first guide plate through the slope.

[0019] Preferably, the channel opens toward the guide cavity in a trumpet shape to guide the gathered liquid to flow into the channel; a baffle is provided at the opening of the channel toward the filter, and the baffle is configured to prevent the liquid in the filter from flowing into the channel.

[0020] In the present invention, a plurality of edging plates are combined to form a shape that fits the filter, which is surrounded and wrapped around the filter, and then combined with refractory cotton to wrap around all the edging plates to fill the fitting gap between the edging plates and the sand mold, thereby completely filling the fitting gap between the filter and the sand mold, blocking the molten iron so that it must pass through the filter aperture to enter the mold cavity; the scrap rate of the product can be reduced, and the risk of product failure due to slag holes can be reduced.

[0021] In addition, in the present invention, each edging plate includes an inner plate, an outer plate and a guide cavity between the inner plate and the outer plate. The inner plate and the outer plate are connected by connecting parts. The distance between the inner plate and the outer plate can be adjusted according to needs. Combined with the yieldability of the refractory wool, it can be easily lowered into the sand mold, and will not reduce production efficiency during actual use.

[0022] Then, through the guide cavity and the function of the guide plate inside it, part of the liquid can be diverted into the guide cavity for flow, and the guide plate can be used to distribute the liquid into the filter for filtration, which plays a good role in drainage and drainage, and prevents the liquid from gathering around the filter and affecting the filtration efficiency; among them, the inner plate wraps the outside of the filter, which solves the problem of product scrapping caused by debris falling off the side mesh. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0024] In the attached figure:

[0025] Figure 1 It is a structural schematic diagram of the filtering structure of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the edge board of the present invention;

[0027] Figure 3 It is a side view of the edge board of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the outer plate of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the inner plate of the present invention;

[0030] Figure 6 It is a structural schematic diagram of a guide plate of the present invention;

[0031] Figure 7 It is a structural schematic diagram of another guide plate of the present invention;

[0032] Numbers in the figure: 1. filter; 2. edging plate; 21. inner plate; 22. outer plate; 23. guide chamber; 24. first guide plate; 241. slope; 242. flow channel; 243. chamfer; 25. second guide plate; 26. stop strip; 27. channel; 28. trumpet-shaped; 3. refractory wool; 4. barb; 5. connecting plate; 51. through hole; 6. baffle. DETAILED DESCRIPTION

[0033] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following examples. It should be understood that the following text is merely used to describe a casting filter structure or several specific embodiments of the present invention and does not strictly limit the scope of protection specifically claimed in the present invention.

[0034] Example: Figure 1 As shown, a filtering structure for casting is mainly composed of a filter 1 and a edging structure. The edging structure includes several edging plates 2 and refractory wool 3. According to the shape and size of the filter 1, an appropriate number of edging plates 2 are selected to form a shape that fits the filter 1, and are surrounded and wrapped around the filter 1. Then, refractory wool 3 is wrapped around all the edging plates 2 to fill the fitting gap between the edging plates 2 and the sand mold; thereby completely filling the fitting gap between the filter 1 and the sand mold, blocking the molten iron so that it must pass through the aperture of the filter 1 to enter the mold cavity.

[0035] refer to Figure 2 As shown, each edging plate 2 includes an inner plate 21, an outer plate 22, and a guide cavity 23 between the inner plate 21 and the outer plate 22. A connector and a plurality of guide plates staggered in the three-dimensional space of the guide cavity 23 are installed in the guide cavity 23. The connector connects the inner plate 21 and the outer plate 22 and is used to adjust the distance between the inner plate 21 and the outer plate 22. All the guide plates cooperate to guide the liquid entering the guide cavity 23 to tend to gather toward the side of the inner plate 21. The inner plate 21 is provided with a channel 27 corresponding to each guide plate. The channel 27 is configured to guide the gathered liquid into the filter 1.

[0036] Among them, the connecting part is mainly composed of two connecting plates 5 to form a hinge-like structure. The two connecting plates 5 are movably connected to the outer plate 22 and the inner plate 21 at the ends away from each other. The distance between the inner plate 21 and the outer plate 22 is adjusted by changing the angle between the two connecting plates 5. This operation can be targeted based on the gap generated when the filter 1 is placed in the sand mold, and each edging plate 2 can be adjusted independently, so that different gaps around the filter 1 can be independently adjusted and matched.

[0037] In a specific embodiment of the present invention, reference is made to Figure 2As shown, a plurality of through holes 51 are provided on each connecting plate 5, and a side of each connecting plate 5 that receives liquid is provided with a slope toward the center of the guide cavity 23. This arrangement can guide the liquid flowing onto the connecting plate 5 to the guide plate below to avoid liquid remaining on the connecting plate 5.

[0038] In one embodiment, reference Figure 3 As shown, a plurality of barbs 4 are arranged on the side of the inner plate 21 of each edging plate 2 facing the filter 1. The barbs 4 are configured to fit on the filter 1 along with the inner plate 21. The barbs 4 are inserted into the filter 1 to lock the inner plate 21 in a stable fitting state, which can not only automatically lock the state of the inner plate 21, but also solve the problem of product scrapping caused by the side mesh falling off.

[0039] refer to Figure 2-Figure 5 As shown, each guide plate includes a first guide plate 24 and a second guide plate 25; the first guide plate 24 is installed on the outer plate 22 and is inclined toward the inner plate 21; the second guide plate 25 is installed on the inner plate 21 and is located below the first guide plate 24, receiving the liquid flowing down from the first guide plate 24, and is inclined toward the inner plate 21 to gather the liquid toward the inner plate 21; and a stop strip 26 is installed at one end of the second guide plate 25 away from the inner plate 21, and the stop strip 26 at least seals part of the space between the second guide plate 25 and the first guide plate 24.

[0040] Among them, the covering area of the first guide plate 24 and the second guide plate 25 of each guide plate is not less than the maximum distance between the inner plate 21 and the outer plate 22; so that the liquid flowing onto the guide plate can only flow along the guide plate, and there is no gap to cause liquid leakage.

[0041] refer to Figure 4 As shown, it is a schematic diagram of the structure of the outer plate 22. Figure 4 , multiple first guide plates 24 are staggeredly distributed along the liquid flow direction on the side of the outer plate 22 close to the guide cavity 23, the upper first guide plate 24 at least covers part of the area of the lower first guide plate 24, and the lower first guide plate 24 at least completely covers the gap between the upper adjacent first guide plates 24, so that the liquid flowing through the guide cavity 23 is completely on the guide plate. Figure 5 As shown, it is a schematic structural diagram of the inner plate 21. Figure 5 , multiple second guide plates 25 are staggeredly distributed along the liquid flow direction on the side of the inner plate 21 close to the guide cavity 23, and the distribution of each second guide plate 25 is the same as the distribution of the first guide plates 24;

[0042] The first guide plate 24 and the second guide plate 25 of each guide plate are set as shown in the figure. Figure 2 and Figure 3As shown, the first guide plate 24 is located on one side of the second guide plate 25 and can be chamfered 243 to facilitate the first guide plate 24 to better transfer the liquid to the second guide plate 25. The setting of the above-mentioned flow-stopping strip 26 can prevent the liquid from flowing out from the end of the second guide plate 25 below the first guide plate 24, thereby improving the diversion effect. The first guide plate 24 and the second guide plate 25 can be set to a special structure to better guide the liquid to flow, avoid liquid accumulation, and improve fluidity and filtration efficiency.

[0043] In a specific embodiment, the structure of the first guide plate 24 is as follows: Figure 6 As shown, the first guide plate 24 is used to receive the liquid and is provided with a slope 241 on one side, wherein the slope 241 is inclined toward the center of the guide cavity 23. The setting of this structure can make the liquid flowing into the guide cavity 23 tend to flow toward the center and the inner plate 21, thereby preventing the liquid from leaking to the periphery.

[0044] In a specific embodiment, the structure of the first guide plate 24 is as follows: Figure 7 As shown, at least the first guide plate 24 is provided with a recessed flow channel 242 (the second guide plate 25 may also adopt this structure), and the first guide plate 24 is provided with a slope 241 on one or both sides of the flow channel 242, and the slope 241 is inclined toward the center of the guide cavity 23, wherein the flow channel 242 is used to carry the liquid to flow toward the inner plate 21, and the overloaded liquid flows out of the first guide plate 24 by the slope 241. This structure can limit the liquid flow rate of each first guide plate 24, and the overloaded liquid can be guided to the surroundings, thereby flowing into other first flow plates below, realizing liquid diversion and guidance, and improving drainage efficiency.

[0045] In addition, reference Figure 3 and Figure 5 As shown, the channel 27 opens toward the guide cavity 23 and is arranged in a trumpet shape 28 to guide the gathered liquid to flow into the channel 27 ; a baffle 6 is provided at the opening of the channel 27 toward the filter 1 , and the baffle 6 is configured to prevent the liquid in the filter 1 from flowing into the channel 27 .

[0046] The above describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. After knowing the contents described in the present invention, ordinary technicians in this technical field can make several equivalent changes and substitutions without departing from the principles of the present invention. These equivalent changes and substitutions should also be regarded as falling within the scope of protection of the present invention.

Claims

1. A casting filter structure, consisting of a filter and an edge structure, characterized in that: The edge wrapping structure includes: A plurality of edging plates, each of the edging plates surrounding and wrapping around the filter; and Each of the edging plates includes an inner plate, an outer plate, and a guide cavity between the inner plate and the outer plate. A connector and a plurality of guide plates staggered in the three-dimensional space of the guide cavity are installed in the guide cavity. The connector connects the inner plate and the outer plate and is used to adjust the spacing between the inner plate and the outer plate. All of the guide plates cooperate to guide the liquid entering the guide cavity to tend to gather toward one side of the inner plate. Channels are provided on the inner plate corresponding to each of the guide plates, and the channels are configured to guide the gathered liquid into the filter. Refractory wool, wrapped around all the edge plates, used to wrap the fitting gap between the edge plates and the sand mold; The connecting member is formed of two connecting plates forming a hinge-like structure, and the two connecting plates are movably connected to the outer plate and the inner plate at their ends which are far away from each other, and the distance between the inner plate and the outer plate can be adjusted by changing the angle between the two connecting plates; Each of the guide plates comprises: A first guide plate is mounted on the outer plate and tilted toward the inner plate; a second guide plate, mounted on the inner plate and located below the first guide plate, receiving the liquid flowing down from the first guide plate and tilted toward the inner plate to gather the liquid toward the inner plate; and A flow-stopping strip is installed at one end of the second flow guide plate away from the inner plate, and the flow-stopping strip seals at least a portion of the space between the second flow guide plate and the first flow guide plate.

2. A casting filter structure according to claim 1, characterized in that: The edging plates are sequentially spliced together to form a shape that fits the filter.

3. A casting filter structure according to claim 1, characterized in that: A plurality of barbs are arranged on one side of the inner plate of each edging plate facing the filter. The barbs are configured to fit on the filter along with the inner plate. The barbs are inserted into the filter to lock the inner plate in a stable fitting state.

4. A casting filter structure according to claim 1, characterized in that: A plurality of through holes are provided on each of the connecting plates, and a side of each connecting plate receiving liquid is provided with a slope toward the center of the guide cavity.

5. The casting filter structure according to claim 1, characterized in that: The covering area of the first guide plate and the second guide plate is not less than the maximum distance between the inner plate and the outer plate.

6. A casting filter structure according to claim 1 or 5, characterized in that: The first guide plate is provided with a slope on one side for receiving liquid, wherein the slope is inclined toward the center of the guide cavity.

7. A casting filter structure according to claim 1 or 5, characterized in that: At least the first guide plate is provided with a recessed flow channel, and the first guide plate is provided with a slope on one or both sides of the flow channel, and the slope is inclined toward the center of the guide cavity, wherein the flow channel is used to carry the liquid to flow toward the inner plate, and the overloaded liquid flows out of the first guide plate through the slope.

8. The casting filter structure according to claim 1, characterized in that: The channel is opened toward the guide cavity on one side and is arranged in a trumpet shape to guide the gathered liquid to flow into the channel; a baffle is provided at the opening of the channel toward the filter, and the baffle is configured to prevent the liquid in the filter from flowing into the channel.

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